stop (someone or something) from doing something or being in a certain state

launch an attack or assault on; begin hostilities or start warfare with

intended or appropriate for defending against or deterring aggression or attack

capable of being defended

(sports) the team that is trying to prevent the other team from scoring

defend with a bulwark

shield from danger, injury, destruction, or damage

avert, turn away, or repel

hold back, as of a danger or an enemy; check the expansion or influence of

be engaged in a fight; carry on a fight